Komatsu's new D65-18 crawler dozer

Komatsu America Corp. introduced its new line of D65-18 crawler dozers which are powered by a more powerful 217 net HP, Komatsu SAA6D114E-6 engine which is EPA Tier 4 Final emissions certified. Komatsu's Tier 4 Final engines were built on a solid foundation that started in 1996 with the introduction of Komatsu's first Tier 1 engines. The resulting benefit today is a Tier 4 Final engine that is productive, dependable and efficient. This new crawler dozer leverages Komatsu's leadership in technology and innovation by delivering an environmentally friendly engine that provides high levels of performance while reducing full consumption and operating costs.

A standard (EX), low ground pressure (PX) and a wide (WX) track model are available to offer customers flotation and weight distribution options that best match their applications. Operating weight ranges from 45,628 lbs to 51,960 lbs depending on the version.

The D65-18 combines the revolutionary SIGMADOZER blade with a highly efficient automatic transmission with torque converter lock-up to achieve exceptional productivity and fuel economy. A durable Komatsu 6-way Power Angle Tilt (PAT) blade is also available for all models, creating a versatile and agile tractor for various dozing operations.

The crawler dozers are equipped with the latest KOMTRAX technology. Data such as fuel levels, DEF levels, operating hours, location, cautions and maintenance alerts are relayed to the web application for analysis. A new Operator Identification System reports key operating information for multiple operators and a new Auto Idle Shutdown function helps reduce idle time as well as operating.

Komatsu has built upon its strengths using a proven Tier 4 Interim foundation to integrate Selective Catalyst Reduction (SCR) that further reduces NOx emissions using DEF. The Komatsu EPA Tier 4 Final engine uses an advanced electronic control system to manage the air flow rate, fuel injection, combustion parameters, and after treatment functions to optimize performance, reduce emissions, and provide advanced diagnostic capability. The result is lower fuel consumption with no loss of performance. Komatsu continues to use a Komatsu Variable Geometry Turbocharger (KVGT) and a hydraulic Exhaust Gas Recirculation (EGR) valve for more precise temperature and air management control as well as longer component life.

To ensure product reliability and durability in demanding conditions, Komatsu developed the entire system, including the control software which is critical to the effective operation of the aftertreatment system. This control system is also integrated into the machine's on-board diagnostics systems and KOMTRAX, Komatsu's standard telematics system. (Source: Construction & Maintenance)